package com.xianguo.datacenter.interceptors;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.xianguo.datacenter.domain.User;

/**
 * 登陆验证拦截器
 * @人员 鲜果 
 *
 */
public class UserLoginInterceptors implements HandlerInterceptor {

	@Override
	public void afterCompletion(HttpServletRequest arg0,
			HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
			Object arg2, ModelAndView arg3) throws Exception {
	}

	@Override
	public boolean preHandle(HttpServletRequest request,
			HttpServletResponse response, Object value) throws Exception {
		HttpSession session = request.getSession();
		User user = (User) session.getAttribute("user");
		if (user == null) {
			request.getRequestDispatcher("/login.jsp").forward(request, response);
			return false;
		}
		return true;
	}

}
